Roman emperor Hadrian went to his wall to talk to the Picts on the other side of his wall. One Pict sloshes woad all over his toga. ‘Who did that’, roared an enraged Hadrian. As one the Picts replied in Pictish, ‘Cul-de-sac’ which, as we all know translates into “no threw woad”. I’m not sure if this story travels well and I’m not sure about my old History teacher either.